I know our 70 duster is a lot lighter than your car(2600) but last year with a .030 over stock stroke 360 we went a 11.08. Pump gas engine with a 509 cam, 750 holley, victor intake, stock eldebrock heads, 727 trans, 488 gear, 1 5/8 header, app 4800 stall conv. that cam loves a high stall conv. We just finished installing a 520 solid racer brown cam, I ported the heads, and installed 1 7/8 headmen headers. We should have it out this wednesday so we will see what it goes now.